[XLTechie]

The following commits present some proposed improvements (in my opinion) to the readme.

1. Wherever bolding markdown was used to designate file names, folder names, or the like, I have changed these to code markers. In the future, it may be useful to also add quotes to some of them, but I didn't want to do that here.
2. Added some code markers around file/folder names which lacked any kind of distinctive markdown.
3. Added a note to the end of the Requirements section, about using cloud based build environments instead of local building.
4. In section "To create a new add-on using this template": inserted a new step 3, instructing what to copy for workflows usage. Also separated the files/folders to copy into blocks of code markers, to make them easier to copy and paste.
5. Also in section "To create a new add-on using this template": I merged steps 4 and 6, which were redundant. Note that before the previous change, these were steps 3 and 5.
6. Corrected the path of the workflows folder.
7. Updated the copyright, and made a couple minor grammar/punctuation corrections.